how to execute ftp commands from java

URL url = new URL("ftp://admin:administrator@10.20.30.9");URLConnection urlc = url.openConnection();InputStreamReader isr = new InputStreamReader(urlc.getInputStream()); Process process = Runtime.getRuntime().exec(urlc + "cd SABB_APP dir");BufferedReader input = new BufferedReader(isr);String s; while ((s = input.readLine()) != null) { System.out.println(s); }input.close(); I have done this thing for connection,but i want to execute mput and mget commands from java..I thought to use Runtime.getRuntime.exec() but was not able to do..... plaese help me out..... i have an urgency......